滨海空港海关旅检一科科长郭聪带领张瑜、吕晓妍、言柏然等关员坚守海关一线，在长约五十米的海关出入境通道之内，识别并拦截各种走私分子。在基因样本走私案、《层峦时景图》走私案、HPV九价疫苗走私案、盔犀鸟头胄走私案等案件中，他们战胜了重重困难，揪出走私团伙幕后头目，保护了国家利益。郭聪、张瑜等新一代海关人也各自有了宝贵的收获，在并肩作战中迅速成长起来。

At Binhai Airport Customs, Chief Guo Cong leads a dedicated team in intercepting smugglers and combating illegal trade. From genetic samples to rare artifacts, they take on high-stakes cases, uncovering criminal masterminds along the way. As they navigate challenges, the team grows both professionally and personally, driven by their commitment to safeguarding national security.